Question

the process of cooling your body while exercising relies on condensation of water on your skin precipitation on water on your skin evaporation of water from your skin

Explanation:

Evaporation is a cooling process. When water (sweat) evaporates from the skin, it absorbs heat from the body, thus cooling it. Condensation is the opposite (gas to liquid, releasing heat). Precipitation is related to water falling from the atmosphere (rain, snow etc.) and not relevant here.

Answer:

evaporation of water from your skin